<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
    <input type="button" value="获取笑话" @click="getJoke">
    <p>{{ joke }}</p>
    </div>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script src="https://unpkg.com/axios/dist/axios.min.js"></script>
    <script>
        var app=new Vue({
            el:"#app",
            data:{
                joke:"很好笑的笑话"
            },
            methods:{
                getJoke:function(){
                   // console.log(this.joke);//能获取
                    var that=this; //保存this
                    axios.get("https://autumnfish.cn/api/joke11").then
                    (function(response){
                      //  console.log(this.joke); //不能获取
                       // this.joke=response.data;
                      //  console.log(response);
                     console.log(response.data);//可以获取
                      that.joke=response.data;
                    },function(err){
                      that.joke="404 Not Found！";
                    })
                }
            }
        })

    </script>
</body>
</html>